PMID- 37286627 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20231108 IS - 2730-6151 (Electronic) IS - 2730-6151 (Print) IS - 2730-6151 (Linking) VI - 3 IP - 1 DP - 2023 Jun 7 TI - Geology and land use shape nitrogen and sulfur cycling groundwater microbial communities in Pacific Island aquifers. PG - 58 LID - 10.1038/s43705-023-00261-5 [doi] LID - 58 AB - Resource-constrained island populations have thrived in Hawai'i for over a millennium, but now face aggressive new challenges to fundamental resources, including the security and sustainability of water resources. Characterizing the microbial community in groundwater ecosystems is a powerful approach to infer changes from human impacts due to land management in hydrogeological complex aquifers. In this study, we investigate how geology and land management influence geochemistry, microbial diversity and metabolic functions. We sampled a total of 19 wells over 2-years across the Hualalai watershed of Kona, Hawai'i analyzing geochemistry, and microbial communities by 16S rRNA amplicon sequencing. Geochemical analysis revealed significantly higher sulfate along the northwest volcanic rift zone, and high nitrogen (N) correlated with high on-site sewage disposal systems (OSDS) density. A total of 12,973 Amplicon Sequence Variants (ASV) were identified in 220 samples, including 865 ASVs classified as putative N and sulfur (S) cyclers. The N and S cyclers were dominated by a putative S-oxidizer coupled to complete denitrification (Acinetobacter), significantly enriched up to 4-times comparatively amongst samples grouped by geochemistry. The significant presence of Acinetobacter infers the bioremediation potential of volcanic groundwater for microbial-driven coupled S-oxidation and denitrification providing an ecosystem service for island populations dependent upon groundwater aquifers. CI - (c) 2023. The Author(s). FAU - Watson, Sheree J AU - Watson SJ AUID- ORCID: 0000-0002-3412-9596 AD - University of Hawai'i at Manoa, Pacific Biosciences Research Center, Honolulu, HI, USA. FAU - Arisdakessian, Cedric AU - Arisdakessian C AUID- ORCID: 0000-0001-5255-0942 AD - University of Hawai'i at Manoa, Pacific Biosciences Research Center, Honolulu, HI, USA. AD - University of Hawai'i at Manoa, Department of Information and Computer Sciences, Honolulu, HI, USA. FAU - Petelo, Maria AU - Petelo M AD - University of Hawai'i at Manoa, Pacific Biosciences Research Center, Honolulu, HI, USA. FAU - Keliipuleole, Keku'iapoiula AU - Keliipuleole K AUID- ORCID: 0000-0002-5943-6904 AD - University of Hawai'i at Manoa, Pacific Biosciences Research Center, Honolulu, HI, USA. AD - University of Hawai'i at Manoa, Marine Biology Graduate Program, Honolulu, HI, USA. FAU - Tachera, Diamond K AU - Tachera DK AUID- ORCID: 0000-0002-9988-1885 AD - University of Hawai'i at Manoa, Department of Earth Sciences, Honolulu, HI, USA. FAU - Okuhata, Brytne K AU - Okuhata BK AD - University of Hawai'i at Manoa, Department of Earth Sciences, Honolulu, HI, USA. FAU - Dulai, Henrietta AU - Dulai H AUID- ORCID: 0000-0001-5970-1483 AD - University of Hawai'i at Manoa, Department of Earth Sciences, Honolulu, HI, USA. FAU - Frank, Kiana L AU - Frank KL AUID- ORCID: 0000-0002-1988-3881 AD - University of Hawai'i at Manoa, Pacific Biosciences Research Center, Honolulu, HI, USA. klfrank@hawaii.edu. LA - eng GR - OIA-1557349/National Science Foundation (NSF)/ GR - 1931439/National Science Foundation (NSF)/ GR - 1931575/National Science Foundation (NSF)/ PT - Journal Article DEP - 20230607 PL - England TA - ISME Commun JT - ISME communications JID - 9918205372406676 PMC - PMC10247779 COIS- The authors declare no competing interests. EDAT- 2023/06/08 01:08 MHDA- 2023/06/08 01:09 PMCR- 2023/06/07 CRDT- 2023/06/07 23:20 PHST- 2022/09/09 00:00 [received] PHST- 2023/05/24 00:00 [accepted] PHST- 2023/04/18 00:00 [revised] PHST- 2023/06/08 01:09 [medline] PHST- 2023/06/08 01:08 [pubmed] PHST- 2023/06/07 23:20 [entrez] PHST- 2023/06/07 00:00 [pmc-release] AID - 10.1038/s43705-023-00261-5 [pii] AID - 261 [pii] AID - 10.1038/s43705-023-00261-5 [doi] PST - epublish SO - ISME Commun. 2023 Jun 7;3(1):58. doi: 10.1038/s43705-023-00261-5.